激发剂对天然硬石膏的改性研究.pdfVIP

学兔兔 新癯建巍粉拇 全国中文核心期刊 激发剂对天然硬石青的改胜研究 唐玉超，赵青林，陈礼庚，周明凯 (武汉理工大学 材料学院，硅酸盐材料工程教育部重点实验室，湖北 武汉 430070) 摘要：通过测定凝结时间和不同龄期绝干抗折、抗压强度，分析研究盐类和碱性激发剂对天然硬石膏的改性效果，对比优选出 硫酸钠作为合适单一激发剂。在自制激发剂基础上通过与硫酸钠复配，最终获得掺量小、效果好，对硬石膏制品副作用小的高效复 合激发剂。研究结果表明，在合适激发剂的激活下能够获得凝结硬化快，7 d抗折、抗压强度分别达9．00MPa、30．0MPa的天然硬石 膏建筑胶凝材料。 关键词：天然硬石膏；单一激发剂；复合激发剂；激发 中图分类号：TQ177．3ql 文献标识码：A 文章编号：1001—702X(2011)04—0005—03 Research on modification of activator on natural anhydri~ TANG Yuchao，ZHA0 Qinglin，CHEN Ligeng，ZHOU Mingkai (Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education， Wuhan University of Technology，Wuhan 430070，Hubei，China) Abstract：Through the determination of setting time and absolute dry flexural，compressive strength on different ages，analysis and research of salts and alkaline activators on modification of natural anhydrite have been done．So sodium sulfate is a proper single activator by contrast and optimization in aIl ones．On the basis of home—made activator，sinall dosage，favorable effect effi— cient activating agent is obtained by mixed with sodium sulfate．And there are little negative effects of efficient activating agent on anhydrite products．The results show that by the activation of a suitable activator，the cementitious building materials of natural an— hydrite such obtained can be fast hardened and the 7 day flexural，compressive strength respectively up to 9．00 MPa and 30．0 MPa． Key words：natural anhydrite：single activator；composite activating agent：activation 中国天然硬石膏资源非常丰富，储量达300亿t[11，居世界 中掺入激发剂进一步激发活性。本研究选用不同类型的化学 第一。而且石膏建筑